[INFO] fetching crate blstrs 0.6.2...
[INFO] checking blstrs-0.6.2 against 1.95.0 for pr-155915
[INFO] extracting crate blstrs 0.6.2 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate blstrs 0.6.2
[INFO] finished tweaking crates.io crate blstrs 0.6.2
[INFO] tweaked toml for crates.io crate blstrs 0.6.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate blstrs 0.6.2 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 37 packages to latest compatible versions
[INFO] [stderr]       Adding ff v0.12.1 (available: v0.13.1)
[INFO] [stderr]       Adding group v0.12.1 (available: v0.13.0)
[INFO] [stderr]       Adding pairing v0.22.0 (available: v0.23.0)
[INFO] [stderr]       Adding rand_core v0.6.4 (available: v0.10.1)
[INFO] [stderr]       Adding rand_xorshift v0.3.0 (available: v0.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pairing v0.22.0
[INFO] [stderr]   Downloaded ec-gpu v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a01f985a769e4935d6003c4ea3e9ac0f481bf1f2da39ca2b4b7b77fd7d8a25b8
[INFO] running `Command { std: "docker" "start" "-a" "a01f985a769e4935d6003c4ea3e9ac0f481bf1f2da39ca2b4b7b77fd7d8a25b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a01f985a769e4935d6003c4ea3e9ac0f481bf1f2da39ca2b4b7b77fd7d8a25b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a01f985a769e4935d6003c4ea3e9ac0f481bf1f2da39ca2b4b7b77fd7d8a25b8", kill_on_drop: false }`
[INFO] [stdout] a01f985a769e4935d6003c4ea3e9ac0f481bf1f2da39ca2b4b7b77fd7d8a25b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ce2c57094fe6f86a32369fd60a8a342c68b719f5dd322c3d4b1abc5aa12e5d7
[INFO] running `Command { std: "docker" "start" "-a" "9ce2c57094fe6f86a32369fd60a8a342c68b719f5dd322c3d4b1abc5aa12e5d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking byte-slice-cast v1.2.3
[INFO] [stderr]     Checking rand v0.8.6
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]    Compiling blst v0.3.16
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]     Checking pairing v0.22.0
[INFO] [stderr]    Compiling zeroize_derive v1.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking blstrs v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/gt.rs:303:5
[INFO] [stdout]     |
[INFO] [stdout] 303 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/gt.rs:303:5
[INFO] [stdout]     |
[INFO] [stdout] 303 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/blstrs_benches.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blstrs` (bench "blstrs_benches") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9ce2c57094fe6f86a32369fd60a8a342c68b719f5dd322c3d4b1abc5aa12e5d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ce2c57094fe6f86a32369fd60a8a342c68b719f5dd322c3d4b1abc5aa12e5d7", kill_on_drop: false }`
[INFO] [stdout] 9ce2c57094fe6f86a32369fd60a8a342c68b719f5dd322c3d4b1abc5aa12e5d7
